DOC AIRBUS | TSM A320FCAM Channel inaudible
TASK 23-71-00-810-810-A
CAM Channel inaudible
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 23-71-00-710-065-A 4. Fault Isolation
Subtask 23-71-00-810-058-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:25:48 UTC
CAM Channel inaudible
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 23-71-00-710-001 | Operational Test of the CVR and the CVR Channel Recording |
| ASM 237102 | |
| AMM 23-71-13-000-001 | Removal of the CVR Microphone |
| AMM 23-71-13-400-001 | Installation of the CVR Microphone |
| AMM 23-71-14-000-001 | Removal of the CVR Microphone Amplifier |
| AMM 23-71-14-400-001 | Installation of the CVR Microphone Amplifier |
| AMM 23-71-35-000-001 | Removal of the Cockpit Voice Recorder (CVR) 1RK |
| AMM 23-71-35-400-001 | Installation of the Cockpit Voice Recorder (CVR) 1RK |
Subtask 23-71-00-710-065-A 4. Fault Isolation
Subtask 23-71-00-810-058-A ** ON A/C NOT FOR ALL
A. If there is confirmation of the fault:
(1) Replace the AMPLIFIER-CVR MIC [18RK] AMM 23-71-13-000-001 AMM 23-71-13-400-001.
(2) If the fault continues:
(a) Replace the MIC-CVR [16RK] AMM 23-71-14-000-001 AMM 23-71-14-400-001.
(3) If the fault continues:
(a) Do a check and repair of the wiring of the CAM channel between the MIC-CVR [16RK] and the AMPLIFIER-CVR MIC [18RK] , CVR [1RK] and the ASM 237102. CVR [1RK] ASM 237102.
(4) If the fault continues:
Subtask 23-71-00-810-058-B ** ON A/C NOT FOR ALL (1) Replace the AMPLIFIER-CVR MIC [18RK] AMM 23-71-13-000-001 AMM 23-71-13-400-001.
(2) If the fault continues:
(a) Replace the MIC-CVR [16RK] AMM 23-71-14-000-001 AMM 23-71-14-400-001.
(3) If the fault continues:
(a) Do a check and repair of the wiring of the CAM channel between the MIC-CVR [16RK] and the AMPLIFIER-CVR MIC [18RK] , CVR [1RK] and the ASM 237102. CVR [1RK] ASM 237102.
(4) If the fault continues:
- Replace the CVR [1RK] AMM 23-71-35-000-001 AMM 23-71-35-400-001.
A. If there is confirmation of the fault:
(2) If the fault continues:
(a) Do a check and repair of the wiring of the CAM channel between the MIC-PREAMPLI INTEGRATED, CVR [17RK] and the CVR [1RK] ASM 237102. CVR [1RK] ASM 237102.
(3) If the fault continues:
Subtask 23-71-00-810-061-A NOTE: This fault isolation is applicable to the Captain station. Apply this fault isolation test to the others stations. Use the indications in parentheses.
(1) Replace the MIC-PREAMPLI INTEGRATED, CVR [17RK] AMM 23-71-13-000-001 AMM 23-71-13-400-001. (2) If the fault continues:
(a) Do a check and repair of the wiring of the CAM channel between the MIC-PREAMPLI INTEGRATED, CVR [17RK] and the CVR [1RK] ASM 237102. CVR [1RK] ASM 237102.
(3) If the fault continues:
- Replace the CVR [1RK] AMM 23-71-35-000-001 AMM 23-71-35-400-001.
B. If there is no confirmation of the fault:
(1) Replace the CVR [1RK] AMM 23-71-35-000-001 AMM 23-71-35-400-001.
Subtask 23-71-00-710-066-A (1) Replace the CVR [1RK] AMM 23-71-35-000-001 AMM 23-71-35-400-001.
C. Do the test given in Para. 3.